combo box minHeight=0

Change-Id: Ifa3a87eddf1b71cf31afd29c5c9ad1853432c0ba
now showing default example url

Change-Id: I19ea95d320dc70ff2cf7d2c0cc8082ec430399b4
Slider tools now have list and combo box options.

Change-Id: I4f11222be3040889261554d3445ebbbff40cd26b